diff --git a/trezorctl b/trezorctl
index 250fbe13de..00e8067887 100755
--- a/trezorctl
+++ b/trezorctl
@@ -876,6 +876,22 @@ def lisk_get_address(connect, address, show_display):
     return client.lisk_get_address(address_n, show_display)
 
 
+@cli.command(help='Sign message with Lisk address.')
+@click.option('-n', '--address', required=True, help="BIP-32 path, e.g. m/44'/134'/0'/0'")
+@click.argument('message')
+@click.pass_obj
+def lisk_sign_message(connect, address, message):
+    client = connect()
+    address_n = client.expand_path(address)
+    res = client.lisk_sign_message(address_n, message)
+    output = {
+        'message': message,
+        'address': res.address,
+        'signature': binascii.hexlify(res.signature).decode()
+    }
+    return output
+
+
 #
 # CoSi functions
 #
diff --git a/trezorlib/client.py b/trezorlib/client.py
index da7d7f07b1..b095ab7f00 100644
--- a/trezorlib/client.py
+++ b/trezorlib/client.py
@@ -637,6 +637,12 @@ class ProtocolMixin(object):
         n = self._convert_prime(n)
         return self.call(proto.LiskGetAddress(address_n=n, show_display=show_display))
 
+    @expect(proto.LiskMessageSignature)
+    def lisk_sign_message(self, n, message):
+        n = self._convert_prime(n)
+        message = normalize_nfc(message)
+        return self.call(proto.LiskSignMessage(address_n=n, message=message))
+
     @field('entropy')
     @expect(proto.Entropy)
     def get_entropy(self, size):
diff --git a/trezorlib/tests/device_tests/test_msg_lisk_signmessage.py b/trezorlib/tests/device_tests/test_msg_lisk_signmessage.py
new file mode 100644
index 0000000000..72db0c9c50
--- /dev/null
+++ b/trezorlib/tests/device_tests/test_msg_lisk_signmessage.py
@@ -0,0 +1,35 @@
+# This file is part of the TREZOR project.
+#
+# Copyright (C) 2016-2017 Pavol Rusnak <stick@satoshilabs.com>
+#
+# This library is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this library.  If not, see <http://www.gnu.org/licenses/>.
+
+from .common import *
+
+
+@pytest.mark.skip_t1
+class TestMsgLiskSignmessage(TrezorTest):
+
+    def test_sign(self):
+        self.setup_mnemonic_nopin_nopassphrase()
+        sig = self.client.lisk_sign_message([2147483692, 2147483782, 2147483648, 2147483648], 'This is an example of a signed message.')
+        assert sig.address == '7623396847864198749L'
+        assert hexlify(sig.signature) == b'af1d384cce25354b5af129662caed6f3514c6f1f6a206662d301fd56aa5549aa23c3f82009f213a7a4d9297015c2e5b06584273df7c42d78b4e531fe4d4fc80e'
+
+    def test_sign_long(self):
+        self.setup_mnemonic_nopin_nopassphrase()
+        sig = self.client.lisk_sign_message([2147483692, 2147483782, 2147483648], 'VeryLongMessage!' * 64)
+        assert sig.address == '17563781916205589679L'
+        print(hexlify(sig.signature))
+        assert hexlify(sig.signature) == b'a675152c2af34e85dbd75740681efb7d67bf910561d6c9d1e075be2f99d9bc544d62c52f6619756b0e329a2f2d82756ced53b4261a028fcee0d37d7e641ef404'